Improved sugar-evaporator



T. c. BARTLEQ Evaporating Pan. No. 49,363, I Patented Aug. 15, 1865.

' g gzf Inventor,

v 'fw &@

A". FHOTO-LITHQCOJLY. (OSBORNE'S PROCESS.)

UNITED STATES PATENT OEFIcE.

THOMPSON G. BARTLE, OF INDEPENDENCE, IOWA.

IMPROVED SUGAR-EVAPORATOR.

Specification forming part of Letters Patent No. 49,363, dated August 15, 1865.

To all whom it may concern;

Be it known that I, THoMPsoN O. BARTLE, of Independence, in the county of Buchanan and State of Iowa, have invented an Improved Fire and Steam Sugar-Evaporator, and I do herebydeclare that the following is a full, clear, and exact description of the same, reference being had to the accompanying drawings and letters of reference marked thereon, making a part ofthis specification, in which Figure 1 is a longitudinal elevation of my improved fire and steam sugar-evaporator, the ground plane of section being indicated by the line 7 7. Fig. 2 is a longitudinal sectional elevation of my improved evaporator, the ground plane of section being indicated-by the line 6 6. Fig. 3 is a transverse section of my improved evaporator, the plane of section being taken through the longitudinal section of Fig. 2, at the line 2 2, the ground plane being indicated by the line 3 3. Fig. 6 is a transverse section of my improved evaporator, the plane of section being taken through the longitudinal section at the line 1 1, the ground plane being shown at 4 4. Fig. 4is an end elevation of the boiler and pan 0 and O, the top of the arch being shown by the line 5 5. Fig. 5 is a top or plan view of the pans used in my fire and steam sugar-evaporator.

The object of my invention is to provide a convenient evaporator to be used in boiling any kind of saccharine juice by the aid of fire and steam.

To enable others skilled in the art to make and use my invention, I will describe its construction and the mode of operation.

First, I construct my arch in any of the styles now used for operating two pans, but prefer the pattern of the one represented at A, and generally construct it of brick or stone, but it can be made of iron. I then construct a' boiler, as shown at G, of any kind of boileriron used for such purposes, and to the end of the boiler, as shown at G, Fig. 4, asteam safetyvalve is attached and so arranged that the steam from the boiler G will blow oil at any required pressure. On the top of the boiler (J is constructed a pan that is used as an evaporator, and is heated by means of the steam in the boiler 0.

At E is represented the receptacle that is used in filling the boiler with water, the water being conveyed from the partE to the boiler through the piper, and entering the boiler at S.

At J, on the pipe 1', Fig. l, is represented a stop-cock that is used for the purpose of shutting the water off from the boiler and prevent sition is for the purpose of draining its contents into the finishing-pan 0 through the pipe K.

At F, Figs. 2, 5, and 6, is represented what I denominate a steam-coil, and is attached to the boiler O at h, and receives the steam at V. In small pans I usually put three lengths or two coils, but in large pans I put in six lengths or four coils of pipe. These coils of steam-pipe I secure to the bottom of the pan D, raising the end of the coil at l, and secure the end of the pipe with a stop-cock. Where more than two pans are required the coil F can be extended into the same.

At L, Fig. 3, is represented the fire-box con structed for burning wood or coal. X represents the grates, and a the door of the firebox.

Method of using my invention: It is first necessary to fill the boiler with water, about two-thirds full. I then fill the pan D with the kind of juice that is to be evaporated, and boil the same down to the consistency of very thin sirnp. I then draw 011'- the sirup into the finishing-pan 0, and complete the evaporation by means of the steam generated in the boiler G. The pan D will necessarily have to be kept partially full of juice or water while the sirup is being finished in the pan 0. The fire during the process of evaporation cannot easily be made too hot, as the juice in the pan D is not allowed to get thick enough to burn, while the sirup in the pan 0 cannot burn, because it is heated with steam alone. The same care is necessary in examining the condition of the water in the boiler and the proper position rof stopcocks that is required in other steamworks.

It will be seen that as soon as steam is gem ters Patent of the United States, is- J. S. FULLER.

erated in the boiler, the steam-coil F- will be Thecombination of the steam-coilF with one filled with steam, therebygreatly reducing the or more pans, D, in connection with the boiler amount of fuel required in the process of evap- C, substantially as set forth.

oration. 1 Having by the above description fully set THOMPSON BARTLE' forth the character of my device, what 1 claim Witnesses:

as my invention, and desire to secure by Let- GEO. L. OHAPIN, 

